It's a win-win really.
To which predictable stuff I would say - there are many reasons we shouldn't have signed Downs, but because of Trump isn't one of them. This is no different. Peretz has nothing to do with what the Israeli government is doing. Not signing someone because of where they come from is getting very close to an area which I really don't think we want to be going near. I'd ask Ian (or anyone objecting) if he had the same response were we signing a Palestinian player, and if not, why?
What about someone from Sudan? Or Congo? We'd be fine with that, so....